The steering-angle sensor is installed in the steering column switch cluster (SZL). The steering-angle sensor measures the steering-wheel angle optically and without contact. The steering-angle sensor is fitted on the board with the electronic evaluation unit. The steering-angle sensor consists of the following components: code disk and optical sensor.
2012/4/8(日) 午前 3:58
The code disk is connected to the steering wheel via the buffer spring cassette. When the steering wheel is moved, the code disk moves within the optical sensor. There are various line patterns for evaluation on the code disk.
The SZL is connected via the chassis CAN (F-CAN) with the DSC control module.
2012/4/8(日) 午前 3:59
DTC button and HDC button
The DTC button is used to change the operating mode of the chassis control system. The DTC button bears the lettering ”DTC”. The DTC button can be used to select 3 switching states: DTC button not pressed after terminal change: DSC in operation (default)
2012/4/8(日) 午前 4:00
Press DTC button briefly: DTC in operation (notification ”DTC” appears in the instrument cluster above indicator lamp) Press DTC button for longer period: DSC and ASC switched off, ABS and ABD-X still active (indicator lamp in instrument cluster lights up continuously)
2012/4/8(日) 午前 4:01
E70: the DTC button is in the center console switching center (no control module). The center console switching center is connected to the integrated heater / automatic climate control (IHKA). The IHKA sends the signal on the K-CAN.
2012/4/8(日) 午前 4:01
E60 and E61 as of 03/2007: the DTC button is in the switch block to the left of the ashtray. The switch block is connected to the center console switch center (SZM). The SZM control module is installed in the carrier behind the glove compartment.
2012/4/8(日) 午前 4:02
The graphic shows the E70 Index Explanation Index Explanation
1 Center Console Switch Center 2 HDC button
HDC means Hill Descent Control: hill descent assistance
3 DTC button
E70: the HDC button is also in the center console switching center.
E60 and E61: the hill descent control (HDC) can be assigned to the freely programmable buttons on the steering wheel. The HDC can also be activated via iDrive.
The DSC receives additional input signals from th
2012/4/8(日) 午前 4:03
The DSC receives additional input signals from the following components: Brake-fluid level switch
A low brake fluid level is picked up (in the expansion tank via a reed contact) and notified to the DSC control module. With a low brake fluid level, DSC is disabled. Otherwise, there is a danger that air will be drawn into the brake system.
2012/4/8(日) 午前 4:18
Brake light switch
Together with the signal from the brake pressure sensor (only with DSC), braking operations are detected. The brake-light switch contains 2 switches (2-stage). A signal is then made available to the DSC across a line. The engine control module receives both signals. The engine control module sends the signal on the PT-CAN. The DSC control module uses both signals to detect whether the brake pedal has been pressed.
2012/4/8(日) 午前 4:18
Index Explanation Index Explanation
1 Brake light switch 2 Plug-in connection
The Car Access System (CAS) supplies the brake-light switch with terminal R.
2012/4/8(日) 午前 4:19
2 brake pad wear sensors
The brake pad wear sensors (front left and rear right in the internal brake pads) provide additional information on the thickness of the brake pad. This additional information (2 reference points) is used to calibrate the calculated value of the DSC.
Index Explanation Index Explanation
1 Brake disc 2 Brake caliper
3 Brake pad wear sensor (example, rear axle)
2012/4/8(日) 午前 4:20
A critical brake lining thickness is indicated in the instrument cluster by a service requirement display (Condition Based Service CBS) as well as the general brake warning light in red.
The following additional control modules are involved in the dynamic stability control:
2012/4/8(日) 午前 4:20
KOMBI: Instrument cluster
In the event of failure malfunction of the DSC, a Check Control symbol appears in the LC display. The Check Control symbols all have a certain meaning.
If there is a Check Control message, additional supplementary instructions can be displayed on the Central Information Display (CID). CAS: Car Access System
The CAS receives a processed speed signal from the DSC. The CAS recognizes from the signal whether the vehicle is stationary or moving.
2012/4/8(日) 午前 4:21
JBE: Junction Box Electronics
The distributor at the junction box electronics supplies the DSC unit with voltage. Terminal 30 for the return-flow pump as well as the solenoid valve. Terminal 30g for the DSC control module.
2012/4/8(日) 午前 4:22
The graphic shows the E70 Index Explanation Index Explanation
1 Wheel-speed sensor, front left 2 Brake pad wear sensor, front left
3 Brake-fluid level switch 4 Wheel-speed sensor, front right
5 DSC (Dynamic Stability Control) 6 Digital Engine Electronics or Digital Diesel Electronics (DME or DDE)
7
2012/4/8(日) 午前 4:24
Junction box electronics (JBE) 8 Wheel-speed sensor, rear right
9 Brake pad wear sensor, front left 10 Transfer Case & Special Transmission (VTG)
13 Wheel-speed sensor, rear left 14 Car Access System (CAS)
15 Instrument cluster (KOMBI) 16
2012/4/8(日) 午前 4:24
16 Integrated automatic heating and air conditioning system (IHKA)
17 Center Console Switch Center 18 Brake light switch
F-CAN Chassis CAN K CAN Body CAN
Terminal 30 Terminal 30 Terminal 30g Terminal 30g
PT-CAN Powertrain CAN
2012/4/8(日) 午前 4:25
System functions
The following new system functions for den E70 are described for the DSC: DTC: Dynamic Stability Control Brake standby through application at an early stage of the brake pads when required Dry braking of the brake discs on wet roads Fading compensation Drive-off assistant Cruise control with braking function Electromechanical and hydraulic parking brake
2012/4/8(日) 午前 4:26
Other known system functions for the DSC are: ABS: Anti-lock braking system EBV: Electronic charge-air pressure distribution CBC: Cornering brake control MSR: Engine drag-torque control ASC: Automatic Stability Control DSC: Dynamic Stability Control DBC: Dynamic Braking Control ADB-X: 4-wheel drive control HDC: Hill Descent Control Trailer stabilization control
2012/4/8(日) 午前 4:29
The following additional functions that do not belong to driving dynamics control are integrated: RPA: Run Flat Indicator CBS: Condition Based Service
2012/4/8(日) 午前 4:29
DTC: Dynamic Traction Control
DTC is an optimized version of DSC for certain road conditions on forward momentum. The dynamic traction control (DTC) provides improved traction with partially reduced driving stability and is thus only recommended for exceptional situations. In the following exceptional situations, it can be useful to activate DTC briefly: When 'rocking free' or driving off in deep snow or on loose ground.
2012/4/8(日) 午前 4:32
When driving on snow-covered upward inclines, in slush as well as on uncleared roads When driving with snow chains.
2012/4/8(日) 午前 4:33
The function DTC corresponds to that of DSC with a slightly modified control strategy. DTC can be activated by shutting down DSC (DTC button). By means of brake intervention, DTC replicates the function of a conventional differential interlock. It increases the input torque to wheels on a road surface with a higher coefficient of friction.
2012/4/8(日) 午前 4:33
Advantage: with DTC, greater traction is available. Interventions to stabilize the vehicle (e.g. reduction in the engine output) are carried out slightly later than in the case of DSC. In certain situations, the driver must intervene correctively to stabilize the vehicle.
2012/4/8(日) 午前 4:34
Brake standby through application at an early stage of the brake pads when required
Application of the brake pads at an early stage shortens the response time of the brakes. With rapid closure of the throttle (angle of the accelerator pedal), the brake pads are applied immediately. The DSC creates a low brake pressure without perceptibly decelerating the vehicle.
2012/4/8(日) 午前 4:35
This compensates for the clearance between the brake pad and brake disc. If there is no braking within half a second, the created early brake pressure is taken back. Applying the brake pads at an early stage is active at a driving speed greater than 70 kph.
2012/4/8(日) 午前 4:35
Dry braking of the brake discs on wet roads
Dry braking removes the moisture deposited on the brake disc when driving on wet roads or in the rain. Here, the brake pads are applied slightly. This function also shortens the response time of the brakes. Depending on the signal of the rain sensor or the position of the wiper switch, the DSC creates low brake pressure in cycles. This does not lead to any perceptible braking on the vehicle.
2012/4/8(日) 午前 4:36
The brake pads are applied in cycles. The brake discs are wiped regularly in the process. How often and for how long the brake pads are applied depends on: The intensity of the rain, e.g. speed of the window wiper Driving speed greater than 70 kph
2012/4/8(日) 午前 4:36
Fading compensation
Fading means: the braking action diminishes due to high brake-disc temperature. As a reaction to detected fading, DSC increases the brake pressure beyond the brake pressure applied by the driver. At very high brake-disc temperature, the fading compensation leads to the following being displayed: General brake warning lamp in yellow Check Control symbol in the LC display in the instrument cluster in yellow
2012/4/8(日) 午前 4:37
The DSC detects fading as follows: The DSC compares the current vehicle deceleration with a target value related to the current brake pressure. The DSC increases the brake pressure until the target deceleration is reached or until all the wheels are subject to ABS control. The operation is terminated when the brake pedal is no longer pressed or a speed threshold is undershot.
2012/4/8(日) 午前 4:38
Drive-off assistant
When driving off on an incline, a switch from the brake pedal to the accelerator pedal is required. Here, the drive-off assistant prevents the vehicle from rolling in the following situations: uphill in a forward gear uphill in reverse gear
Here, the brake pressure required to hold the vehicle is maintained.
2012/4/8(日) 午前 4:39
The road surface inclination is picked up by the longitudinal acceleration sensor in the DSC control module. The necessary braking torque or engine torque is calculated from the road surface inclination. After detection of the wish to drive off, the brake pressure is reduced as soon as the applied engine torque is sufficient to move the vehicle in the desired direction of travel.
2012/4/8(日) 午前 4:40
If the parking brake is actuated, the drive-off assistant is disabled. If there is no wish to drive off within approx. 2 seconds after releasing the brake pedal, the drive-off assistant is also disabled
2012/4/8(日) 午前 4:40
Cruise control with braking function
The cruise control with braking function is functionally integrated in the DSC. The cruise control keeps the selected speed constant between 30 kph and 250 kph. In comparison with the conventional cruise control, there are the following additional functions:
2012/4/8(日) 午前 4:41
If the engine drag torque on coasting is not sufficient to maintain the selected speed, the DSC additionally decelerates by means of controlled brake intervention. Depending on the current lateral acceleration, the speed in longitudinal direction is lateral acceleration during controlled cornering. At the end of the bend, the required speed is reset.
2012/4/8(日) 午前 4:43
The so-called ”handgas mode” enables the driver to use the steering-column lever to continuously accelerate or decelerate in 2 stages. This means that the desired speed is reached more quickly. During controlled hill descent, the coasting cutout as well as shiftdown of the automatic transmission are adapted. The DSC uses a substitute temperature model to regulate the distribution of torque between the front and rear axle.
2012/4/8(日) 午前 4:44
The coasting cutout has a favourable effect on fuel consumption. Automatic shiftdown and distribution of torque relieve the load on the wheel brake during hill descents.
2012/4/8(日) 午前 4:44
EMF: electromechanical and hydraulic parking brake
The EMF is a parking brake. With the engine running, the DSC applies the retaining force hydraulically. With the engine off, the EMF applies the retaining force mechanically via the actuating unit.
2012/4/8(日) 午前 4:49
ABS: Anti-lock braking system
The anti-lock braking system (ABS) prevents the wheels from blocking on braking. Advantage: short braking distance, the direction of the vehicle remains stable and the vehicle can be steered. The brake pressure on all wheels is regulated in such a way that each wheel runs in an optimized slip range. Here, the slip is regulated in such a way that the highest possible braking and cornering forces can be transferred.
The electronic braking force distribution (EBV) is a component of the ABS. EBV regulates the braking force distribution between the front and rear axles depending on the load.
2012/4/8(日) 午前 4:51
Advantage: independently of the load, optimized braking distances with simultaneous high driving stability are achieved. The brake lining wear is better distributed. If the ABS fails, the EBV function remains as long as possible. The EBV function requires the signals from at least 2 wheel-speed sensors per axle.
The Cornering Brake Control (CBC) is an expansion of the ABS. CBC increases driving stability on braking in curves (”curve logic”). Advantage: optimization of the driving stability with partial braking on cornering. The shift in wheel loads on cornering (even with light braking) can reduce driving stability. If required, CBC creates a stabilising counter-torque outside of the ABS feedback control range during light braking.
2012/4/8(日) 午前 4:52
MSR: Engine drag-torque control
The engine drag-torque control (MSR) prevents the blocking tendency of the drive wheels on smooth roadways. On downshifting or in the case of abrupt load changes (especially on a roadway with a low coefficient of friction), there is a danger that the drive wheels block due to the engine drag-torque. Via the wheel-speed sensors, MSR detects the blocking tendency even as it is about to happen.
2012/4/8(日) 午前 4:53
MSR briefly reduces the engine drag-torque by accelerating slightly. Advantage: the drive wheels retain their cornering forces even in the coasting (overrun) mode.
コメント（46）
Diagnostic Software
http://forums.bimmerforums.com/forum/forumdisplay.php?f=233
2012/4/8(日) 午前 3:57
The steering-angle sensor is installed in the steering column switch cluster (SZL). The steering-angle sensor measures the steering-wheel angle optically and without contact. The steering-angle sensor is fitted on the board with the electronic evaluation unit. The steering-angle sensor consists of the following components: code disk and optical sensor.
2012/4/8(日) 午前 3:58
The code disk is connected to the steering wheel via the buffer spring cassette. When the steering wheel is moved, the code disk moves within the optical sensor. There are various line patterns for evaluation on the code disk.
2012/4/8(日) 午前 3:58
Index
Explanation
Index
Explanation
1
Steering Column Switch Cluster (SZL)
2
Optical sensor
3
Code disk
The SZL is connected via the chassis CAN (F-CAN) with the DSC control module.
2012/4/8(日) 午前 3:59
DTC button and HDC button
The DTC button is used to change the operating mode of the chassis control system. The DTC button bears the lettering ”DTC”. The DTC button can be used to select 3 switching states:
DTC button not pressed after terminal change: DSC in operation (default)
2012/4/8(日) 午前 4:00
Press DTC button briefly: DTC in operation (notification ”DTC” appears in the instrument cluster above indicator lamp)
Press DTC button for longer period: DSC and ASC switched off, ABS and ABD-X still active (indicator lamp in instrument cluster lights up continuously)
2012/4/8(日) 午前 4:01
E70:
the DTC button is in the center console switching center (no control module). The center console switching center is connected to the integrated heater / automatic climate control (IHKA). The IHKA sends the signal on the K-CAN.
2012/4/8(日) 午前 4:01
E60 and E61 as of 03/2007:
the DTC button is in the switch block to the left of the ashtray. The switch block is connected to the center console switch center (SZM). The SZM control module is installed in the carrier behind the glove compartment.
2012/4/8(日) 午前 4:02
The graphic shows the E70
Index
Explanation
Index
Explanation
1
Center Console Switch Center
2
HDC button
HDC means Hill Descent Control: hill descent assistance
3
DTC button
E70:
the HDC button is also in the center console switching center.
E60 and E61:
the hill descent control (HDC) can be assigned to the freely programmable buttons on the steering wheel. The HDC can also be activated via iDrive.
The DSC receives additional input signals from th
2012/4/8(日) 午前 4:03
The DSC receives additional input signals from the following components:
Brake-fluid level switch
A low brake fluid level is picked up (in the expansion tank via a reed contact) and notified to the DSC control module. With a low brake fluid level, DSC is disabled. Otherwise, there is a danger that air will be drawn into the brake system.
2012/4/8(日) 午前 4:18
Brake light switch
Together with the signal from the brake pressure sensor (only with DSC), braking operations are detected.
The brake-light switch contains 2 switches (2-stage). A signal is then made available to the DSC across a line. The engine control module receives both signals. The engine control module sends the signal on the PT-CAN. The DSC control module uses both signals to detect whether the brake pedal has been pressed.
2012/4/8(日) 午前 4:18
Index
Explanation
Index
Explanation
1
Brake light switch
2
Plug-in connection
The Car Access System (CAS) supplies the brake-light switch with terminal R.
2012/4/8(日) 午前 4:19
2 brake pad wear sensors
The brake pad wear sensors (front left and rear right in the internal brake pads) provide additional information on the thickness of the brake pad. This additional information (2 reference points) is used to calibrate the calculated value of the DSC.
Index
Explanation
Index
Explanation
1
Brake disc
2
Brake caliper
3
Brake pad wear sensor (example, rear axle)
2012/4/8(日) 午前 4:20
A critical brake lining thickness is indicated in the instrument cluster by a service requirement display (Condition Based Service CBS) as well as the general brake warning light in red.
The following additional control modules are involved in the dynamic stability control:
2012/4/8(日) 午前 4:20
KOMBI: Instrument cluster
In the event of failure malfunction of the DSC, a Check Control symbol appears in the LC display. The Check Control symbols all have a certain meaning.
If there is a Check Control message, additional supplementary instructions can be displayed on the Central Information Display (CID).
CAS: Car Access System
The CAS receives a processed speed signal from the DSC. The CAS recognizes from the signal whether the vehicle is stationary or moving.
2012/4/8(日) 午前 4:21
JBE: Junction Box Electronics
The distributor at the junction box electronics supplies the DSC unit with voltage.
Terminal 30 for the return-flow pump as well as the solenoid valve.
Terminal 30g for the DSC control module.
2012/4/8(日) 午前 4:22
The graphic shows the E70
Index
Explanation
Index
Explanation
1
Wheel-speed sensor, front left
2
Brake pad wear sensor, front left
3
Brake-fluid level switch
4
Wheel-speed sensor, front right
5
DSC (Dynamic Stability Control)
6
Digital Engine Electronics or Digital Diesel Electronics (DME or DDE)
7
2012/4/8(日) 午前 4:24
Junction box electronics (JBE)
8
Wheel-speed sensor, rear right
9
Brake pad wear sensor, front left
10
Transfer Case & Special Transmission (VTG)
11
DSC sensor
12
Steering column switch cluster (SZL)
13
Wheel-speed sensor, rear left
14
Car Access System (CAS)
15
Instrument cluster (KOMBI)
16
2012/4/8(日) 午前 4:24
16
Integrated automatic heating and air conditioning system (IHKA)
17
Center Console Switch Center
18
Brake light switch
F-CAN
Chassis CAN
K CAN
Body CAN
Terminal 30
Terminal 30
Terminal 30g
Terminal 30g
PT-CAN
Powertrain CAN
2012/4/8(日) 午前 4:25
System functions
The following new system functions for den E70 are described for the DSC:
DTC: Dynamic Stability Control
Brake standby through application at an early stage of the brake pads when required
Dry braking of the brake discs on wet roads
Fading compensation
Drive-off assistant
Cruise control with braking function
Electromechanical and hydraulic parking brake
2012/4/8(日) 午前 4:26
Other known system functions for the DSC are:
ABS: Anti-lock braking system
EBV: Electronic charge-air pressure distribution
CBC: Cornering brake control
MSR: Engine drag-torque control
ASC: Automatic Stability Control
DSC: Dynamic Stability Control
DBC: Dynamic Braking Control
ADB-X: 4-wheel drive control
HDC: Hill Descent Control
Trailer stabilization control
2012/4/8(日) 午前 4:29
The following additional functions that do not belong to driving dynamics control are integrated:
RPA: Run Flat Indicator
CBS: Condition Based Service
2012/4/8(日) 午前 4:29
DTC: Dynamic Traction Control
DTC is an optimized version of DSC for certain road conditions on forward momentum. The dynamic traction control (DTC) provides improved traction with partially reduced driving stability and is thus only recommended for exceptional situations. In the following exceptional situations, it can be useful to activate DTC briefly:
When 'rocking free' or driving off in deep snow or on loose ground.
2012/4/8(日) 午前 4:32
When driving on snow-covered upward inclines, in slush as well as on uncleared roads
When driving with snow chains.
2012/4/8(日) 午前 4:33
The function DTC corresponds to that of DSC with a slightly modified control strategy. DTC can be activated by shutting down DSC (DTC button). By means of brake intervention, DTC replicates the function of a conventional differential interlock. It increases the input torque to wheels on a road surface with a higher coefficient of friction.
2012/4/8(日) 午前 4:33
Advantage: with DTC, greater traction is available. Interventions to stabilize the vehicle (e.g. reduction in the engine output) are carried out slightly later than in the case of DSC. In certain situations, the driver must intervene correctively to stabilize the vehicle.
2012/4/8(日) 午前 4:34
Brake standby through application at an early stage of the brake pads when required
Application of the brake pads at an early stage shortens the response time of the brakes. With rapid closure of the throttle (angle of the accelerator pedal), the brake pads are applied immediately. The DSC creates a low brake pressure without perceptibly decelerating the vehicle.
2012/4/8(日) 午前 4:35
This compensates for the clearance between the brake pad and brake disc. If there is no braking within half a second, the created early brake pressure is taken back. Applying the brake pads at an early stage is active at a driving speed greater than 70 kph.
2012/4/8(日) 午前 4:35
Dry braking of the brake discs on wet roads
Dry braking removes the moisture deposited on the brake disc when driving on wet roads or in the rain. Here, the brake pads are applied slightly. This function also shortens the response time of the brakes. Depending on the signal of the rain sensor or the position of the wiper switch, the DSC creates low brake pressure in cycles. This does not lead to any perceptible braking on the vehicle.
2012/4/8(日) 午前 4:36
The brake pads are applied in cycles. The brake discs are wiped regularly in the process. How often and for how long the brake pads are applied depends on:
The intensity of the rain, e.g. speed of the window wiper
Driving speed greater than 70 kph
2012/4/8(日) 午前 4:36
Fading compensation
Fading means: the braking action diminishes due to high brake-disc temperature. As a reaction to detected fading, DSC increases the brake pressure beyond the brake pressure applied by the driver. At very high brake-disc temperature, the fading compensation leads to the following being displayed:
General brake warning lamp in yellow
Check Control symbol in the LC display in the instrument cluster in yellow
2012/4/8(日) 午前 4:37
The DSC detects fading as follows: The DSC compares the current vehicle deceleration with a target value related to the current brake pressure. The DSC increases the brake pressure until the target deceleration is reached or until all the wheels are subject to ABS control. The operation is terminated when the brake pedal is no longer pressed or a speed threshold is undershot.
2012/4/8(日) 午前 4:38
Drive-off assistant
When driving off on an incline, a switch from the brake pedal to the accelerator pedal is required. Here, the drive-off assistant prevents the vehicle from rolling in the following situations:
uphill in a forward gear
uphill in reverse gear
Here, the brake pressure required to hold the vehicle is maintained.
2012/4/8(日) 午前 4:39
The road surface inclination is picked up by the longitudinal acceleration sensor in the DSC control module. The necessary braking torque or engine torque is calculated from the road surface inclination. After detection of the wish to drive off, the brake pressure is reduced as soon as the applied engine torque is sufficient to move the vehicle in the desired direction of travel.
2012/4/8(日) 午前 4:40
If the parking brake is actuated, the drive-off assistant is disabled. If there is no wish to drive off within approx. 2 seconds after releasing the brake pedal, the drive-off assistant is also disabled
2012/4/8(日) 午前 4:40
Cruise control with braking function
The cruise control with braking function is functionally integrated in the DSC. The cruise control keeps the selected speed constant between 30 kph and 250 kph.
In comparison with the conventional cruise control, there are the following additional functions:
2012/4/8(日) 午前 4:41
If the engine drag torque on coasting is not sufficient to maintain the selected speed, the DSC additionally decelerates by means of controlled brake intervention.
Depending on the current lateral acceleration, the speed in longitudinal direction is lateral acceleration during controlled cornering. At the end of the bend, the required speed is reset.
2012/4/8(日) 午前 4:43
The so-called ”handgas mode” enables the driver to use the steering-column lever to continuously accelerate or decelerate in 2 stages. This means that the desired speed is reached more quickly.
During controlled hill descent, the coasting cutout as well as shiftdown of the automatic transmission are adapted. The DSC uses a substitute temperature model to regulate the distribution of torque between the front and rear axle.
2012/4/8(日) 午前 4:44
The coasting cutout has a favourable effect on fuel consumption. Automatic shiftdown and distribution of torque relieve the load on the wheel brake during hill descents.
2012/4/8(日) 午前 4:44
EMF: electromechanical and hydraulic parking brake
The EMF is a parking brake.
With the engine running, the DSC applies the retaining force hydraulically.
With the engine off, the EMF applies the retaining force mechanically via the actuating unit.
2012/4/8(日) 午前 4:49
ABS: Anti-lock braking system
The anti-lock braking system (ABS) prevents the wheels from blocking on braking. Advantage: short braking distance, the direction of the vehicle remains stable and the vehicle can be steered. The brake pressure on all wheels is regulated in such a way that each wheel runs in an optimized slip range. Here, the slip is regulated in such a way that the highest possible braking and cornering forces can be transferred.
2012/4/8(日) 午前 4:50
EBV: Electronic charge-air pressure distribution
The electronic braking force distribution (EBV) is a component of the ABS. EBV regulates the braking force distribution between the front and rear axles depending on the load.
2012/4/8(日) 午前 4:51
Advantage: independently of the load, optimized braking distances with simultaneous high driving stability are achieved. The brake lining wear is better distributed. If the ABS fails, the EBV function remains as long as possible. The EBV function requires the signals from at least 2 wheel-speed sensors per axle.
2012/4/8(日) 午前 4:51
CBC: Cornering brake control
The Cornering Brake Control (CBC) is an expansion of the ABS. CBC increases driving stability on braking in curves (”curve logic”). Advantage: optimization of the driving stability with partial braking on cornering. The shift in wheel loads on cornering (even with light braking) can reduce driving stability. If required, CBC creates a stabilising counter-torque outside of the ABS feedback control range during light braking.
2012/4/8(日) 午前 4:52
MSR: Engine drag-torque control
The engine drag-torque control (MSR) prevents the blocking tendency of the drive wheels on smooth roadways. On downshifting or in the case of abrupt load changes (especially on a roadway with a low coefficient of friction), there is a danger that the drive wheels block due to the engine drag-torque. Via the wheel-speed sensors, MSR detects the blocking tendency even as it is about to happen.
2012/4/8(日) 午前 4:53
MSR briefly reduces the engine drag-torque by accelerating slightly. Advantage: the drive wheels retain their cornering forces even in the coasting (overrun) mode.
2012/4/8(日) 午前 4:54